Malicious PDF — malware analysis report

Static analysis result for SHA-256 f539d326e630b414…

MALICIOUS

PDF

63.3 KB Created: 2020-08-08 04:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4029ca5da6ee75d02a4a8339d68b65f1 SHA-1: 1f0df6f212f4549293806b2a444cd3095ba54eb6 SHA-256: f539d326e630b41481bd3f4c5d73fb0ebdeefb281036b6f3ba7caa8a1d59ee5a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.cc', a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to trick users into clicking the malicious link, likely leading to further compromise.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=burden+of+proof+in+civil+cases+pdf
    • http://files.thegullyshop.com/uploads/1/3/1/4/131453984/5902559.pdf
    • http://files.carlsbadlancerbands.com/uploads/1/3/1/6/131606261/robijijijinu.pdf
    • http://files.yorkstone.ca/uploads/1/3/0/7/130740438/notidi.pdf
    • http://files.welakabaptistchurch.com/uploads/1/3/2/3/132303001/topizigu_waline_ximijo_jenod.pdf
    • http://files.samthoughts.com/uploads/1/3/2/6/132696018/koxububo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2017/2957/files/tuzolugusoloxefomafipala.pdf
    • https://cdn.shopify.com/s/files/1/0441/0189/4296/files/candidiasis_intestinal_tratamiento_medico.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/52668201032.pdf
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/76080606426.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/gelitomow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/zabonepisebunuxabuxat.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/medical_virology_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8457/7958/files/effects_of_workplace_bullying.pdf
    • https://cdn.shopify.com/s/files/1/0435/7036/4571/files/mac_cpu_usage.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3013/files/lokibuweve.pdf
    • https://cdn.shopify.com/s/files/1/0440/7571/2664/files/14728114017.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba1c.bin
fa4434242286180ea6ef72efc715bcebbd113d30ed0d35f7cc7f85e88cd04c71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA1C 5256 bytes
font_01_sfnt_off0000cc15.bin
84b2fd1ece70808eeae70964b6dc4359f1ea1218e3b1a23693ac6b03775e0f32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC15 10388 bytes

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